Comment 3 for bug 1096029

it sounds like a compatibility issue between swift's s3 middleware and the actual s3 behavior, hence a bug in swift's s3 middleware compatibility. we could try to address in txaws s3 implementation as a workaround, but that's not quite right..

looking over the s3 swift middleware history this is the commit that causes the issue

https://github.com/fujita/swift3/commit/c3341b8de8befc7ed6dfca94de70904baa853c61

its basically disallowing a time delta of more 1m from the server current time, which is broken for this case, in addition to parsing it with the wrong format.